Recovery of Ti and Li from spent lithium titanate cathodes by a hydrometallurgical process

Tang, Wenjiang; Chen, Xiangping; Zhou, Tao; Duan, Hao; Chen, Yongbin; Wang, Jian

doi:10.1016/j.hydromet.2014.05.013

Cited by 43 publications

(12 citation statements)

References 31 publications

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“…Analytical results indicate that about 95.8% lithium can be precipitated. And the precipitation percentage is much higher than that of using saturated sodium carbonate (about 85%) investigated by Tang et al [35] due to its lower solubility than Li 2 CO 3 . And the purities for Ni(OH) 2 and Li 2 CO 3 are 99.13% and 99.67%, respectively.…”

Section: Recovery Of Nickel and Lithiummentioning

confidence: 73%

Separation and recovery of metal values from leaching liquor of mixed-type of spent lithium-ion batteries

Chen

Zhou

et al. 2015

Separation and Purification Technology

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183

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Section: Recovery Of Nickel and Lithiummentioning

confidence: 73%

Separation and recovery of metal values from leaching liquor of mixed-type of spent lithium-ion batteries

Chen

Zhou

et al. 2015

Separation and Purification Technology

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183

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“…Then manganese was selectively extracted from the leaching liquor using cobalt loaded D2EHPA (Co-D2EHPA) (Cole, 2002;Hossain et al, 2011). Finally, cobalt and lithium were sequentially precipitated and separated using ammonium oxalate solution and saturated sodium carbonate solutions (Tang et al, 2014;Wang et al, 2009), respectively. It is expected that this study can provide an effective recycling route for Ni, Co, Mn and Li recovery from leaching liquor of waste cathode materials.…”

Section: Introductionmentioning

confidence: 99%

Hydrometallurgical recovery of metal values from sulfuric acid leaching liquor of spent lithium-ion batteries

et al. 2015

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“…The extraction of Ti from titanium white waste acid with N1923 can be described by the following reaction formula 31 :

{TiO}^{2 +} goodbreak+ {SO}_{4}^{2 -} goodbreak+ {({RNH}_{3})}_{2} {SO}_{4} \to {({RNH}_{3})}_{2} {SO}_{4} TiO {({SO}_{4})}_{2}

The extraction equilibrium constant K ex and distribution ratios D at a certain temperature can be expressed as follows:

K_{ex} goodbreak= \frac{([], {(RN {normalH}_{3})}_{2} normalS O_{4} TiO {(S {normalO}_{4})}_{2})}{([], {TiO}^{2 +}) \times ([], normalS {normalO}_{4}^{2 -}) \times ([], {(RN {normalH}_{3})}_{2} normalS O_{4})}

D goodbreak= \frac{{([], {(RN {normalH}_{3})}_{2} normalS O_{4} TiO {(S {normalO}_{4})}_{2})}_{italicorg}}{{([], {TiO}^{2 +})}_{italicaq}}

According to Equations and , the following Equation can be obtained:

\lg D goodbreak= \lg k_{ex} goodbreak+ \lg ([], normalS {normalO}_{4}^{2 -}) goodbreak+ \lg ([], {(RN {normalH}_{3})}_{2} normalS O_{4})

Based on the Van't Hoff equation, Equation can be acquired, which explains the relationship of distribution ratios as the enthalpy change.

\lg D goodbreak= goodbreak-

…”

Section: Resultsmentioning

confidence: 99%

“…The extraction of Ti from titanium white waste acid with N1923 can be described by the following reaction formula 31 : The extraction equilibrium constant K ex and distribution ratios D at a certain temperature can be expressed as follows:…”

Section: Thermodynamic Analysis Of Ti Extraction With N1923 Extractantmentioning

confidence: 99%

Recovery of Ti from titanium white waste acid with N1923 extraction and leaching of low‐grade pyrolusite using raffinate

Feng

2022

Asia-Pacific J Chem Eng

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Titanium dioxide industry produces a large amount of titanium white waste acid every year. In this work, to make full use of and recover valuable components in titanium white waste acid, a processing for recovery of Ti from titanium white waste acid with N1923 extraction and leaching of low-grade pyrolusite using raffinate was proposed. After a two-stage countercurrent extraction, 99.93% Ti was extracted, while 6.51% Fe, .11% Mg, .06% Mn, and .08% Al were co-extracted under N1923 concentration of 25% and phase ratio (O/A) of 2/1. The scrubbing efficiency of iron reached 98.53%, while the loss efficiency of titanium was only .94% with 1.5 mol/L sulfuric acid solution under the phase ratio of 1/1. Then, the Ti-loaded organic phase could be effectively stripped by .8 mol/L ammonia water; the single-stage stripping efficiency of titanium was 99.23%. Subsequently, the raffinate could be used for the extraction of manganese from low-grade pyrolusite. The leaching efficiency of manganese was 99.39% at the S/L ratio of 48.00 g/L, leaching temperature of 50 C, and leaching time of 40 min. In addition, thermodynamic calculations revealed that the titanium extraction process by N1923 from titanium white waste acid was an exothermic reaction. The proposed approach is suitable for co-recovery of titanium from titanium white waste acid and manganese from low-grade pyrolusite.

show abstract

Recovery of Ti and Li from spent lithium titanate cathodes by a hydrometallurgical process

Cited by 43 publications

References 31 publications

Separation and recovery of metal values from leaching liquor of mixed-type of spent lithium-ion batteries

Separation and recovery of metal values from leaching liquor of mixed-type of spent lithium-ion batteries

Hydrometallurgical recovery of metal values from sulfuric acid leaching liquor of spent lithium-ion batteries

Recovery of Ti from titanium white waste acid with N1923 extraction and leaching of low‐grade pyrolusite using raffinate

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